The F-117 Nighthawk, the nation’s first stealth bomber, would radically change the way America fought wars, Annie Jacobsen explains (in Area 51):
As a Lockheed official explained at a banquet honoring the F-117 in April of 2008, “Before the advent of stealth, war planners had to determine how many sorties were necessary to take out a single target. After the invention of the F-117 stealth bomber, that changed. It became, How many targets can we take out on a single sortie?”
Lockheed physicist Edward Lovick worked on each rendition of the stealth bomber, which began in the early 1970s with Harvey, a prototype aircraft named after the Jimmy Stewart film about an invisible rabbit. Harvey’s stealth qualities were initially engineered using slide rules and calculators, the same way Lockheed had developed the A-12 Oxcart. Only with the emergence of the mainframe computer, in 1974, did those tools become obsolete. “Two Lockheed engineers, named Denys Overholser and Dick Scherrer, realized that it might be possible to design a stealth aircraft that would take advantage of some of the results of a computer’s calculations,” Lovick says. “In 1974 computers were relatively new and most of them were the size of a car. Our computer at Lockheed ran on punch cards and had less than 60 K worth of memory.” Still, the computer could do what humans could not do, and that was endless calculations.
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“We designed flat, faceted panels and had them act like mirrors to scatter radar waves away from the plane,” Lovick says. “It was a radical idea and it worked.”
The next, on-paper incarnation of the F-117 Nighthawk began in 1974 and was called the Hopeless Diamond, so named because it resembled the Hope Diamond and because Lockheed engineers didn’t have much hope it would actually fly. After the Hopeless Diamond concept went through a series of redesigns it became a full-scale mock-up of an aircraft and was renamed Have Blue.
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“It was a very weird, very crude-looking thing that actually looked a lot like the ship from Twenty Thousand Leagues Under the Sea. Our job was to look at it from every angle using radar to see how it showed up on radar.”
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“Initially, it was as visible as a big old barn,” says Barnes. So the Have Blue mock-up was sent back to the Skunk Works for more fine-tuning. Several months later, a new version of the mock-up arrived at Area 51. “Lockheed had changed the shape of the aircraft and a lot of the angles of the panels. Once we put the new mock-up on the pole it appeared to us as something around the size of a crow.” There was a final round of redesigns, then the airplane came back to Area 51 again. “We put it up on the pole and all we saw was the pole.”
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The director of science and engineering at Skunk Works, a man named Ed Martin, went to Lovick for some advice. “Ed Martin asked me how I thought the aircraft might appear on enemy radar. I explained that if the Oxcart showed up as being roughly equivalent to the size of a man, the Have Blue would appear to a radar like a seven-sixteenth-inch metal sphere — roughly the size of a ball bearing.” Ed Martin loved Lovick’s analogy. A ball bearing.
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Before Martin left for Washington, DC, Lovick went to the Lockheed tool shop and borrowed a bag of ball bearings. He wanted Ed Martin to have a visual reference to share with the Air Force officials there. “Later, I learned the ball-bearing illustration was so effective that the customers began rolling the little silvery spheres across the conference table. The analogy has become legendary, often still used to make an important visual point about the stealthy F-117 Nighthawk with its high-frequency radar signature that is as tiny as a ball bearing.”
Well, it depends on what your targets are, doesn’t it? Which of course depends on strategy and operational environment.
“2008”. The doctrine shift toward Balkans/Afghanistan style wars already happened, it was an effect of USSR falling, and as such it would be much the same whether stealth was there or not.